How to choose certificate.
1. Go to the settings menu, click on the ใบรับรองอิเล็กทรอนิกส์ (Certificate)
.
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2. Press on เลือกใช้ (Apply)
button for the certificate that you want to use for digital signature.
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3. After successfully selecting the certificate. There will be a green circle with a tick mark (after the name of the e-certificate you have selected).
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