# 5.3 Installment

**Introduction**

\[[Installment](https://wecon.gitbook.io/pistudio-manual/8.-basic-functions/8.2-installment)] meets the needs of the designer or equipment manufacturer to provide the trial period to the end customer.

At the same time, it provides the function of installment charges to designers and equipment manufacturers. The expiration date could be defined by the user.

**Operating procedure**

1. Open \[Project setting] windows;
2. Open \[Instalment] sub-windows;
3. Select \[Static mode] or \[Dynamic mode];
4. Enter password, expire time and other parameters if necessary;
5. Click \[OK] button to save setting and exit windows;

![](https://3950998874-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2Fpi-series-user-manual%2F-Luq2DhB21wksUIkrXW2%2F-Luq2HxILh5foy4DoX-S%2F0.png?generation=1575012348493757\&alt=media)

**Result**

At 17th May 2019, 11:47 HMI screen will be locked and ask enter password.


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