Multi-select custom field type does not available when trying to add it as a column in the View

Hi Erica,
 
I'm afraid, Multi-Select fields cannot be added as columns in ticket views as of the moment. You can check this article for more details:
 
Creating views to manage ticket workflow

I've taken a look and found that other users are discussing similar needs here:
 
https://support.zendesk.com/hc/en-us/community/posts/4408868295706-Multi-select-Fields-in-Views
 
You can up-vote that original post and add your detailed use-case to the conversation. Threads with a high level of engagement ultimately get flagged for product managers to review when they go through roadmap planning. Thank you!