Transfering money to enterprise (Golden Rainbow) (Golden Rainbow)

How do I go about doing this?

I have a corp, its rather new, on the transfer funds screen instead of a input box, it just has a "-". Do i have to wait awhile or am I doing something wrong?

Theres a limit on corps cash so you cant transfer funds to corp with large amounts, ie new ones.

Hold your pointer over other corps transfer funds box and it will show max amount transferable.