Is the use of II, SS, and ADDL allowed simultaneously

Dear NMusers, Is the use of II, SS, and ADDL allowed simultaneously in NONMEM? I wish to assess PK profiles at SS with and without compliance. Here is the potential scenario I am interested in: i) Patients come in at SS and take their 1st two doses correctly ii) Patients then remain compliant OR miss a dose OR ingest a double dose iii) Patients then resume taking their doses correctly For (i) I will need II, SS and ADDL For (ii) I don't need any II or SS or ADDL For (iii) I will need II and ADDL Kindly advice...Mahesh PS. I am aware that I can hard code (formatting via S-plus etc) each dose after the first SS dose as a separate dosing record but I wish to know if there is an easier method available