Request Type Field in BBGM

Hello,

I am new to BBGM and wondering if somebody could assist me where I can find the Request Type field in BBGM. Specifically, I am looking for instructions on how to add a new value to its dropdown menu.
For context, I have already searched through the Blueprint>Field Library but was unable to find an option to edit the "Type" field or add new values.

Thank you in advance for your assistance.

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