Please, I'm using the MS Teams on my machine (E5) and doesn't appears any option to include the calendar and call tab. Some users here there are this opitions.. Could you know how can I include that options on my profile?
Do you mean the Meetings and Calls option in the left rail? If so, the Calls option will only show for users who have been enabled for Teams calling, however Microsoft are currently rolling out an update so all users with see this option, some tenancies have this update already.
Is your mailbox hosted in Exchange Online or on-premises? From memory it will only display if your mail box is hosted in Office 365.
The forthcoming update to Microsoft Teams will mean all users will see the calls option (irrespective of whether you have configured the cloud voice options - see next).
If you are planning on using the cloud voice options in Teams (e.g. making/receiving calls via the PSTN - public switched telephone network) then this needs to be configured/enabled for users, which will then mean they see the Calls option (the update above is not required in this scenario). Here is some guidance on cloud voice deployment https://docs.microsoft.com/en-US/MicrosoftTeams/cloud-voice-deployment