I'm quite new to SF nad started with learn with trailhead. For that purpose I created developer account. Sofar so good. Now I wanted to create a simple HR tool for vacation requests for employees as learn by doing. Then I realized there is something like that already ( e.g. WorkflowX ). So I wanted to try it out. Installed it and looks good, but there is only one employee in the app ... me. So I created another user, gave him  name, role etc. But it does not appear as an employee. I saw in some forum you need to open "Employees" from App Launcher and match new Employee with an user ... but I can't see "Employees" app anywhere. And there is no employee object (which I read should be default object). Do I miss something? How can I impl. any (HR) App if I can't create any additional employee in my dev/sandbox organization?   

I'm quite new to SF nad started with learn with trailhead. For that purpose I created developer account. Sofar so good. Now I wanted to create a simple HR tool for vacation requests for employees as learn by doing. Then I realized there is something like that already ( e.g. WorkflowX ). So I wanted to try it out. Installed it and looks good, but there is only one employee in the app ... me. So I created another user, gave him  name, role etc. But it does not appear as an employee. I saw in some forum you need to open "Employees" from App Launcher and match new Employee with an user ... but I can't see "Employees" app anywhere. And there is no employee object (which I read should be default object). Do I miss something? How can I impl. any (HR) App if I can't create any additional employee in my dev/sandbox organization?