Switch from Tier 2 ICT PBS to Tier 4

Hi,

Currently I am on Tier 2 ICT visa and planning for my spouse to switch to Tier 4 Student Visa. Can you please help with the below queries.

- Can my spouse switch the visa from PBS Dependant to Tier 4 Student Visa within UK.

- While filling the Tier 4 Visa for my spouse, for the current visa selection field, there is no option to select 'PBS Dependant'. Hence we had to type the details in the field Other Visa types as 'PBS Dependant Leave to Remain'. Is that fine?

- For my form as a tier 4 Dependant visa: for the question: 'Do you currently have a valid visa or leave to remain as a dependant of a points-based system(PBS) migrant?', I have selected 'Yes'. As I am on Tier 2 ICT main visa. Question: Is my selection right?

Thanks.