Background: There is lack of knowledge on how occupational therapists (OTs) assess daily time management (DTM) for persons with dementia (PwDs) and on which aspects affect prescription of time assistive technology (AT). Aim: To explore OTs' experiences of assessing the need for and prescribing time AT for PwDs. Material and methods: Focus group interviews with OTs that prescribe time AT for PwDs analyzed via qualitative content analysis. Results: A main category and four categories were identified. The categories illustrated a complex and time-consuming prescription process, which was facilitated if the PwD was supported by a significant other (SO). Support from a SO was especially important during implementation and follow-up. OTs had to take individual responsibility for staying informed about time AT. Organizational limitations and time constraints were barriers for OTs striving to work according to national prescription guidelines. Conclusions and significance: High demands are made on SO's participation during the prescription process. PwDs with no support from SOs are at risk not receiving or fully benefitting from time AT. To avoid inequalities, specific forms of support need to be developed and targeted at PwDs without SOs to ensure that they have sufficient opportunities to access and use time AT.