How to automatic process SSAS cube using SQL Server agent
job

After connecting to the Analysis Server, right click on
the Cube and select Process

When the process window opens, click the dropdown by Script and
select Script Action to
Clipboard. Then click Cancel so you
will not start processing the Cube immediately.

Now open a job or create a new Job in SQL Server agent.

In the Job
window, click on Steps and New to open the New Job Step window.
Give the step a name and change the Type to SQL Server Analysis Services
Command. Enter the Server and Paste the contents of the Clipboard from earlier
into the Command window.

Click OK
twice and the Job will now include the step to execute the pasted script which
will process the Cube.

In the Job window, click on Schedules, then you can
schedule you SSAS cube process job.

Dive for more about automatic process SSAS cube using SQL
Server agent job

You may have errors using SQL Server Job
for your remote SSAS cube server,

Create Proxy account for Job processing

1, Create credentials

2 create new proxy account for cube process
job

After that you can create a new job for
remote SSAS cube server in your local server agent if you add your credentials
as admin for your remote SSAS cube server