RE: how to add in a view page three entities information?
You can have an idea from below standard role center
page 9028 "Team Member Role Center"
{
Caption = 'Team Member', Comment = 'Use same translation as ''Profile Description'' (if applicable)';
PageType = RoleCenter;
layout
{
area(rolecenter)
{
part(Control11; "Headline RC Team Member")
{
ApplicationArea = Suite;
}
part(Control3; "Team Member Activities")
{
ApplicationArea = Suite;
}
part(Control7; "User Tasks Activities")
{
ApplicationArea = Suite;
}
part("Emails"; "Email Activities")
{
ApplicationArea = Basic, Suite;
}
part(ApprovalsActivities; "Approvals Activities")
{
ApplicationArea = Suite;
}
part(Control4; "My Time Sheets")
{
ApplicationArea = Suite;
}
}
}