To create the global option set, follow these steps:
1. In the navigation pane, click on Settings.
2. In the Customization group, click on Customizations and then click on Customize the System to open the default solution.
3. Click on the Global Option Sets component and then click on New.
4. Provide a display name in the Display Name field.
5. In the Options section, click on the Add icon (a green plus sign) to add a new option and provide a label for the option in the Label field.
6. Continue to add options, you will meet your requirements.
7. Once you have finished with adding the options, click on Save and Close.

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Once you have created a global option set, it can be used when you create a new option set field in any entity in the solution in which you have created the global option set.
To create a new option set field associated with a global option set, follow these steps:
1. In the navigation pane, click on Settings.
2. In the Customization group, click on Customizations and then click on Customize the System to open the default solution.
3. Expand the Entities component and then expand the appropriate entity.
4. Click on the Fields section and then click on New.
5. In the new Field form:
a. Provide a display name.
b. Specify Type as Option Set.
c. Set Use Existing Option Set to Yes.
d. Set the Option Set value to your custom global option set.
e. Optionally, specify a default value.
6. Click on Save and Close.