Typically, the activities displayed in student view will display all day according to what is on your My Plan for that day. Unless, you have a time set for Homework - only activities designated for the homework time period display.
If you are using homework for remote learning, we recommend avoiding this right now as that is for the typical learning / classroom environment. Homework is designed to only show certain activities during a specified time frame after school hours.
Since this is not a typical situation with remote learning, we recommend just using the standard schedule so that all activities display all day long for the student and the student and caregiver have the flexibility to select which activities to work on throughout the day at home.