With multi-select dropdown fields, users can select multiple options from the dropdown in incident and service item forms in Freshservice.

For Service Catalog forms, you can create Multiselect Lookup fields too, which means the user can select multiple Assets, Users, Departments etc..

We've covered our bases in workflows as well with support for the following:

• Trigger Events when a Multiselect field in a Ticket is Updated
• Set Values to a Multiselect Ticket Field
• Add/Remove Options for Multiselect Fields

https://support.freshservice.com/en/support/solutions/articles/50000003160-setting-up-multi-select-dropdown-for-incident-forms-and-service-catalog