How can I derive a field using just the first character from andther field?

Field 1: dropdown choice e.g. EVE64, EXE65, etc... 

Field 2: dropdown choice e.g. Monday, Tuesday, etc...

Field 3: Derive [field 3] from 1 & 2 that cannot be entered manually

Using Conditions, IF [field 1] is [filled] AND, IF [field 2] is [filled] AND, ALL fields are matched - DO

COPY MULTIPLE FIELD VALUES [field 1] AND [field 2] to SUMMARY [field 3]

Result example in [field 3] is EVE64Monday

However I only want the first letter of field 2 to return EVE64M

can this be done please?

thank you

You can do it using Calculations + the Substring widget.

link: https://www.jotform.com/widgets/substring

You can extract specified char/string from the field data using the Substring widget and use the update/calculate condition to transfer the data into another field.