Channel Availability Planning in SAP PI 7.4

Hi,

I am working on scheduling of the channel using availablity planning present in Configuration and Monitoring Home.

But I am getting lots of issues while doing the same:

1) Once availbility plan for one channel is created. Its not giving option to edit.

2) There is nothing showing up in the availabilty times tab.

3) There is nothing showing up in Schedule tab.

I have to provide availabilty for every Wednesday, Thursday and friday 5-7 PM, which pattern I should select and what all are steps.

Also, if we have to schedule same channel morning 1 hr and evening 1 hr. How should we do that? Should we create two schedules with different time for same channel?

Thanks,

Vertika