How do I manage group chat settings in Skype on mobile or tablet?

While in your group chat, tap the Group header.

From your group profile, you can:

Android (6.0+), Android tablet, iPhone, and iPad

Add or update a group picture: Select the group picture to upload a photo or remove the photo altogether.
Choose a new color for your group: Select the Edit button next to your group picture to select a new color. It may take a little time before your color updates.
Change your group name: Select the Edit button next to your group name to type a new one.
Send a link to join your group: Select Share link to join group to share an invitation link to your group chat outside of Skype. Chat invitations must be enabled before you can share an invitation link. Select your profile picture, Settings, select Notifications , and then toggle Chat invitations on.
Send a message: Select Send message to send a message to this group.
Start a video call: Select Start video call to start a video call with this group.
Start a call: Select Start call to start an audio call with this group.
Add People: Select Add people to include additional participants in your group conversation.
Add bots: Select Add bots to search for and include a Skype bot in your group conversation.
Group Gallery: Select Group Gallery to view all of the images, links, and files that have been shared to this group chat.

You can also archive your group chat to remove it from your recent chat list.

Notifications: Turn notifications on or off to receive an alert anytime you receive a new chat in this group.
Smart Notifications: With Smart Notifications on, you will only be notified anytime someone quotes you or @mentions you in this group.
Add to favorites: Add this this group conversation to the top of your Chats tab.
Chat history: Allow everyone to see the chat history.
Share group via link: Select to allow group members to create and share an invitation link for this group. Chat invitations must be enabled before you can share an invitation link. Select your profile picture, select Settings, select Notifications , and then toggle Chat invitations on.
Leave group: Leave the group chat.

Add or update a group picture: Select the group picture to upload a photo or remove the photo altogether.
Change your group name: Select the Edit button next to your group name to type a new one.
Notifications: Turn notifications on or off to receive an alert anytime you receive a new chat in this group.
Share group via link: Select Share group via link to share an invitation link to your group chat.
Chat history: Allow everyone to see the chat history.
Delete group: Delete the group chat.
Leave group: Leave the group chat.
Add People: Select Add people to include additional participants in your group conversation.