Adding to a group
Two ways to add the bot to a Telegram group.
From the bot
Open @NudesRemoverBot in Telegram, press Manage chats in the start menu and then Add chat on the mini app's Home screen. It opens Telegram's own "add to group" picker with the required admin rights pre-selected — accept the picker and the bot is added and promoted in one step.
From the group itself
Open the group's member list → Add member, search for @NudesRemoverBot, add it, then promote it to administrator manually with the rights listed in Permissions.
After adding it
The bot doesn't check anything until you open the mini app for that group and switch on Bot enabled — see Getting started. Adding the bot to a group does not, by itself, turn moderation on.
Forum-style groups (split into topics) are supported the same way — every topic in the group is moderated once the bot is enabled, not just the general topic.