Why the Manage button in Scheduled Jobs is not visible

Question

I scheduled 2 jobs in Developer Console:

System.schedule('Scheduled Process Daily at 09:00 and 21:00', '0 0 9/12 * * ? *', new ScheduledProcess_1());
System.schedule('Scheduled Process Daily at 03:00', '0 0 3 * * ? *', new ScheduledProcess_1());

When I am checking these jobs in Scheduled Jobs in Setup, I see that one has the Manage link while the other don't. Why does it happen?

NOTE: I checked out this question Manage button is not visible in schedule job on the forum, but it doesn't answer my question.

--EDIT--

I managed to schedule more than 2 jobs:

System.schedule('Scheduled Process Daily at 09:00 and 21:00', '0 0 9/12 * * ? *', new ScheduledProcess_1());
System.schedule('Scheduled Process Daily every 2 hours', '0 0 0/2 * * ? *', new ScheduledProcess_1());
System.schedule('Scheduled Process Daily at 03:00', '0 0 3 * * ? *', new ScheduledProcess_1());
System.schedule('Scheduled Process Daily at 04:00', '0 0 4 * * ? *', new ScheduledProcess_1());
System.schedule('Scheduled Process Daily at 05:00', '0 0 5 * * ? *', new ScheduledProcess_1());

The result:

Answer 1

The answer is the same from the question that you mentioned.

You need to check following options for Manage link visibility on Scheulde jobs.

To monitor scheduled jobs user needs “View Setup and Configuration” One more thing, is some one scheduled those job using Developer Console, Workbench. Hence Manage Link will not be available. You can schedule apex class from Setup-> Apex Class -> Schedule Apex Button

Why for one you have the Manage button and for other no?

You can schedule a job only one time by day using Schedule Apex button. As you have used two times in the command below. You cannot see the Manager button for this schedule.

System.schedule('Scheduled Process Daily at 09:00 and 21:00', '0 0 9/12 * * ? *', new ScheduledProcess_1())