Combaning info/tables from two different timetables to one worksheet

Hello Matikas and Welcome to Excel Forum.
I find that the online translators are pretty accurate and you can copy from the English translation side and paste to the Quick Reply window.
As for marking Sundays, the values in row 2 are converted to dates. Cell C2 contains the first day of the month (manually entered) and the rest of the dates fill by formula: =IF(C2< EOMONTH($C2,0),SUM(C2,1),"")
The conditional formatting is: =WEEKDAY(C$2)=1
Looking at Sheet2 the normal number of hours to be worked in a month seems to be manually entered as in cell AH1.
The values in column AH are now calculated using: =IF(OR(LEFT(B4,4)="Team",B4=""),"",SUMIFS(AL4:BP4,AL$2:BP$2,">="&C$2,AL$2:BP$2,"<="&EOMONTH(C$2,0)))
Normal hours worked is displayed using: =IF(OR(LEFT(B4,4)="Team",B4=""),"",MIN(AH4,AH$1))
Overtime hours are calculated using: =IF(OR(LEFT(B4,4)="Team",B4=""),"",AH4-AI4)
Not enough time (Under Time) hours are calculated using: =IF(OR(LEFT(B4,4)="Team",B4=""),"",AH$1-AH4)
I would need to know the absence codes to help there.
The "differ" column on Sheet2 references another file, so I don't know how to help with that.
Let us know if you have any questions.