To add a field with control rules in Odoo Studio, you can follow these steps:

1. Open the Odoo Studio application and select the model you want to add the field to.

2. Click on the "Create" button and select the "Field" option.

3. Enter the name of the field and select its data type.

4. Scroll down to the "Constraints" section and check the "Required" box to make the field mandatory.

5. In the "Control Rules" section, click on the "Add an Item" button and enter the following conditions:

• The field name must not be already used
• The field name must not contain any spaces
• The field name must be in uppercase letters

1. To add a tooltip with a description of the input rules, click on the "Add an Item" button in the "Tooltips" section and enter the text "Short name is a short code with uppercase letters and no spaces".

2. Click on the "Save" button to save the changes and add the field to your model.

You can then use this field in your reports and views to ensure that the input data follows the specified rules.