How can we set custom icons for activities?

Step 1. Developer mode

General settings > activate developer mode

Step 2. Create a new activity type (or edit an existing one]

Settings > technical menu > select “activity types” > new > fill in the necessary fields following the general documentation for activities [link]

Step 3. Add the icon key

Check the available icons at https://fontawesome.com/v4/icons/ > select one > copy the key (fa-…) > paste it in odoo 

Done Once you plan an activity, the system will show the corresponding icon