I am not an expert on IPTVEditor but their subreddit sucks. Here's the essentials that I had to work through so you don't. Note: if this is your first time loading this site, you may be put through a tutorial/wizard. My tutorial explains what to do if you've bypassed or already done this.

• After making an account, get to the playlist manager screen. Add a new playlist. Name it whatever you want.
• Enter the credentials given to you by your provider. I ignore the multiple choice question below it.
• Proceed and you'll be asked what streams to import. I choose everything except for channel number because I don't know what this does to my playlist if I rearrange things. If you don't select epg, you'll start your epg from scratch using iptveditor's epgs and whatever other ones you add. However, I'm not sure what happens when new channels are added by your provider if you do it this way; they might not have an epg and then you'll have to pair one.
• Proceed and you'll be prompted to select the channel categories. Sometimes your playlist loads slowly or won't load at all and you'll have to retry everything until you get to this screen. It's a dropdown of your categories. I load them all in there and then eliminate the ones I don't want later. I suspect if you don't, you won't deal with the categories ever repopulating when new channels are added to a category, but I could be wrong. I manage those a different way.
• Same with Movies, TV, Series. Then proceed. It'll be added to the playlist manager list.
• Click on load channels beside your playlist. It'll load a screen where you can access everything including the movies and series.
• This will put you in the basic editor for channels area. Here I would first go to the left panel and click on epg editor after expanding "channels." Top right corner, click on "add external epg source." Add the credentials you entered earlier as an external epg in this format:  http://test.com:80/xmltv.php?username=test&password=123 Once that's successful go back to the previous screen and hit the globe icon to add the epgs that iptveditor provides.
• Then,I would stay within channels area for now. Go to category editor. Remove categories you don't want by selecting and then choosing "remove category."
• Remove the channels you want by going into basic editor and choosing the ones you want and clicking "delete."
• Now you're going to pair epgs. Go to the epg editor. Choose the channel(s) you want. Select the epg source. This could be the epg that you entered as an external epg or the ones that you selected in the globe. Depends on what you want. First you load the source, then you can either use the automatic tool to see if it can automatically be found or you can type in the name of the channel in the manual epg search area.
• Some sports will have no epg available to add in the traditional way. You'll need to use a feature that allows you to move the channel name to the epg area. Go to the basic editor. Select the channel(s), choose "sync name" hit save. Go to the epg editor and choose "use channel's name as epg event" hit save. You should now see that a "dummy channel" has been added as the epg and that the channel has been highlighted.
• Now you're going to go fill in missing logos if needed. Sometimes logos don't load up in editor but you'll see them in tivimate anyway. So you might want to wait in this until you've tested this playlist. Choose the logo editor. Choose the stream(s) and decide if you want to add them manually like you did with the epg, if you want to automatically have them all added (that button actually will allow you to select a category rather than actually adding it to ALL channels), or if you want to search for logos just for the channels you've chosen. If you can't find a logo, using wikipedia or google and right clicking on an image and choosing "copy image address" will work if you then put that address in the logo url window on that screen where you were playing with the logos.
• There are other features for automatically eliminating prefixes and suffixes from channel names that you might want to play with. Same thing with sorting/alphabetizing the categories.
• You can rename categories but pay close attention to the "sync custom categories" section later. Same thing with merging categories.
• In the category editor, you can also play around with the top right menus and create a new category. You can move channels into this category or you can duplicate the channel and then move it into this category.
• Next go into movies. Go to the category editor and delete/remove all the ones you don't want. I don't make custom categories here because it becomes annoying when you have a provider that "does his own thing" with the way he updates his libraries. Do the same with Series. I don't rename or remove prefixes so I can't advise. I would not recommend. For similar reasons to above.
• IMPORTANT. IPTVEditor will "call home" at least once a day. When it does this, it pulls updates from your provider. You need to set up how it does that now that you've customized things.
• Choose "auto updater"from bottom left and choose "manage sources." I pick xtream because I'm not lazy. Proceed past the credentials. Typically you choose Channels/Movies/TV in the next area.
• Choose everything, including the new option that comes up when you start checking boxes. I don't check the "disable domain security" option.
• The bottom area becomes extremely important so that your playlist doesn't get messed up when it syncs with the mothership.
• On the right, choose the new name of your category. On the left, choose the name of the original category (or categories) that you would like to be moved into this category when a sync occurs. Then click add. Do this for all of your categories. I think if you rename the category again, it will be smart enough to change the name here automatically on its own. Click next
• Do the same thing for movies and tv series. I don't select the custom categories for these because I don't mess with that. Proceed to the next screen where you will see some evidence that you created an auto update. Click on int. Click on run now. Hope it works.
• Now. What you've done does not customize the source of your iptv. It makes a new set of customized credentials for you. So you'll need to delete the old ones from Tivimate and replace them with new credentials. Here's how you find them. In Playlist Manager, click on the "i" within a circle on the right side of your chosen playlist- the "information" icon. Choose xtream api (because you are no longer lazy). That server name, user name and password are what you're going to plug into Tivimate to see all of your custom work. Make sure you set Tivimate to update the playlist and epg frequently.
• If you are going to do something that's new for you, first go duplicate the playlist you're going to try it with in the "playlist manager" so that you don't mess your life up.
• To apply these settings to another set of user names and passwords from the same provider, you can either duplicate the playlist and change the provider details or you can learn how to manage customers from one master playlist.
• Don't DM me.
• I'll proofread this some other time.