Hello and welcome @Cayde_Leung!
To make sure I understand, you are looking to setup a field on Table 1 to write out when the code times in Table 2 have checkboxes checked?
One possible way to do what you are looking to do would be to create a third table just for tracking times. I created Table 3 that just tracks hourly times slots:
![Screen Shot 2021-03-29 at 10.42.21 AM Screen Shot 2021-03-29 at 10.42.21 AM](/t5/image/serverpage/image-id/18805iE7B0B36A33C0C629/image-size/large?v=v2&px=999)
Then linked each code in Table 2 to a time slot using a linked record field:
![Screen Shot 2021-03-29 at 10.43.07 AM Screen Shot 2021-03-29 at 10.43.07 AM](/t5/image/serverpage/image-id/18810i3242A7177F4BEAEB/image-size/large?v=v2&px=999)
With that in place I could then go to Table 1 and create a Lookup field to display the time each code was associated with.
![Screen Shot 2021-03-29 at 10.44.47 AM Screen Shot 2021-03-29 at 10.44.47 AM](/t5/image/serverpage/image-id/18809i0D58238A3F5F673A/image-size/large?v=v2&px=999)
Here is what the Table 1 table looks like with that lookup field in place.
![Screen Shot 2021-03-29 at 10.46.01 AM Screen Shot 2021-03-29 at 10.46.01 AM](/t5/image/serverpage/image-id/18815i52F39E7B08AB2DCC/image-size/large?v=v2&px=999)
Let me know if that helps- or if not please let me know and we can work out a formula to return what you are looking for. :slightly_smiling_face: