Hello Lola Cristobo,

I hope you are doing well.

- You go to CRM -> Sales -> My Activities and remove the filters My Activities, you would be able to view activates for all team members

- You can also adding a new filter 'Next Quarter Activities'

Please find code in comment.

I hope this helps.

Thanks & Regards,
Email: odoo@aktivsoftware.com
Skype: kalpeshmaheshwari

It is not clear if you wish to view activities assigned to a team member or have an admin assign them.

If you wish to view activities: CRM > Sales > My activities

On this menu if you remove the "My Activities" filter on the search bar, you would be able to view activates for all team members

You can also filter by adding a customer filter on 'Next Activity deadline'

If you wish to report, you can export to xls, please be sure to include 'activity_ids', activity_summary, activity_type_id, activity_user_id, activity state, activity due date

If you wish for an admin to assign future activities to team members, you can do with importing, the post below details the steps
https://www.odoo.com/forum/help-1/v15-how-to-import-planned-activities-in-the-crm-chatter-206681