I am going through the assumption for a logistic regression but I am stuck on making sure the 'IV is linearly related to the log odds'.

My DV is dichotomous and all of my IV's are categorical (some binary, others with multiple groups). I am struggling to test this assumption on my data as I do not know whether it must only be done on continuous IV's or it must still be done on categorical data. If it must be done on categorical IV's would anyone be able to advise how I can do this? (I'm using SPSS however, I'm new to this.. so apologies if this appears to be a silly question).

Many thanks!!