Cannot figure out syntax to display a time of day in a formula text field

I don't see where you can use Time of Day with ToFormattedText.  The HHMM format looks like it meant for "Duration" fields.

You may wan to consider using a Date/Time field rather than Time of Day with this:

ToFormattedText([Date Created],"MMDDYY")  returns "01-30-00 10:34 PM

I thought of that but unfortunately, I use a non-native app that updates and creates records in other locations of my system and I already have everything written using a separate date field. To change it at this point has ripple effects that would take longer than I have to spend on the project to correct. I know that my syntax is off and that ToFormattedText is not correct but is there any syntax that will convert a time of day field to display in a formula text field as part of a formula? Thanks for your suggestion!

I useda Time of Day type field, the times display as AM or PM, and this worked to only show the HHMM in your statement:

If([Lockbox Needed?]="Yes", 
"Contract signing scheduled for "& 
Trim(Left(ToText([Time of day]),5)) &". Also make sure to install lockbox", 
Trim(Left(ToText([Time of day]),5)))

Perfect! That worked! Thank you very much!