Use altbot with multibot. It even have module to maintain different raid groups.
Multibot: https://github.com/mod-playerbots/mod-playerbots/wiki/Playerbot-Addons-and-Sub%E2%80%90Modules#multibot-by-macx-lio

Im already using it.
In my cases, I have some problems with it ... or at least it is not working like I want.

Only the person who has invited the bot, has control over it. If I want to share the bots with my friends its always a discussion who uses which bot. Sure it can also be done by controling all bots only with one person. But then you have to manage splitting up etc on our own.

My current Progress is:

• Login all Bots from a bot account (in discussion which persons controls which bots etc) with a command or Macro
• Uninvite every single bot I dont want to be in the Group / Raid.
• For Dungeon Groups I need to leave the raid and create a new group to invite the selected bots again
• run the dungeon

Im looking for an nicer way, like I said before. So the bots come up online like the RandomBots And they can be simply invited to Group / Raid. Then the Bot is controled by the person who has invited him. They dont need to do anything. They should only be online in the guild to react on actions.

Even the Multibot Addon dont works great here, because if I have about 40 bots in a guild, most of the times the guild filter shows only a few bots (mostly my other characters which are disabled to be a bot), but not all. And yes, the bot accounts are bond with my account. For me, it seems like its not working correctly.

Im using the newest version of everything. I update the server and addons every week. (https://github.com/Wishmaster117/MultiBot)